@misc{indiciae0dbc6abc1555,
  title = {Flood of September 1971 in southeastern Pennsylvania},
  author = {Leland V. Page and Lewis C. Shaw},
  year = {1973},
  doi = {10.3133/ofr73217},
  url = {https://pubs.usgs.gov/publication/ofr73217},
  note = {Source identifier: ofr73217}
}